diff --git a/app/scodoc/sco_formsemestre_edit.py b/app/scodoc/sco_formsemestre_edit.py
index ab96e146..bbf80097 100644
--- a/app/scodoc/sco_formsemestre_edit.py
+++ b/app/scodoc/sco_formsemestre_edit.py
@@ -746,7 +746,7 @@ def do_formsemestre_createwithmodules(edit=False):
         if ndb.DateDMYtoISO(tf[2]["date_debut"]) > ndb.DateDMYtoISO(tf[2]["date_fin"]):
             msg = '<ul class="tf-msg"><li class="tf-msg">Dates de début et fin incompatibles !</li></ul>'
         if sco_preferences.get_preference("always_require_apo_sem_codes") and not any(
-            [tf[2]["etape_apo" + str(n)] for n in range(0, scu.EDIT_NB_ETAPES + 1)]
+            [tf[2]["etape_apo" + str(n)] for n in range(1, scu.EDIT_NB_ETAPES + 1)]
         ):
             msg = '<ul class="tf-msg"><li class="tf-msg">Code étape Apogée manquant</li></ul>'